Combined mop head and wringer



May 17, 1932. o, CARLSON COMBINED MOP HEAD AND WRIN\GER 2 Sheets-Sheet Filed Sept. 16 1929 lbmziw/ 0560] Cal/S017 Zgif waz/dp n) May 17,- 1932.

O. CARLSON COMBINED MOP HEAD AND WRINGER 2 Sheets-Sheet 2 Filed Sept. 16, 1929 x 0564718 ajso);

Patented May 17, 1932 w uNrre-1)L str-Ares .PATENT o'FFlgj-ciEzi CARLSQNHOF? MINNEAPOLIS, MINNESOTA,. AsSIGNoR To REEL-Mor"'CORIPCJRMy TIoNfoFL MINNEAPOLIS, MINNESOTA, A- CORPORATION or MINNESOTA COMBINED Mor vHEAD AND WRINGER Application med fsep'amrnmfV 16, 1929.1' serial No. 392,331.

Mly'presentinventionhas for its object tO provide #aff simple and l'hig-hly :v eiiicient mop head and wringer and is in the nature ofLan improvement onv or' l al' relinement 'of the -mop wheafdf"A and' Wringer f disclosed; and broadly l claimed-1inmy United States -Letters Patent 1,683'5655'f0f date=September 11, 1928.

To fthe above fend; theinvention consists. of the novel; devices' =and combinations of `def cate like parts throughout ythe Aseveral views:

1.151 Referringlto thel drawings:

Figl VAis avperspective'fviewv ofthe mop` headii'a d wringen Showing themanner Vin which theisame-islhe'l-d to wring a=mop orY unwindfalfmopftherefrom, after the samefhas Figf2lisaviewfcorresponding to Fig: 1, but s oma-smaller scale, showing the mop wound'onf the vyrngingsroll i .z y

Figi 3is Iafperspective Viewfof the mop rese' movedf'fromfthe mopfheadfand Wrmger;

Figgl: is a fragmentary detail view off the mPlinrrsection takenf on the 'lleAf-i-iofg' 8f3 oni an enlarged Scaler; Figilf is fa f detail vieW Pl'nclpauy 1n Sec;

3N VJtioni takenforrl thelinef-rofFigf. 1, onf an y l Avagainstlongitudinal shifting vmovement 1n enlarged scale" 3 i Fig. Glisfaiviewfpartly in elevation and partly-in central: Section taken on the Irregular'li-ne -'of llig;` 1,V onf anf enlarged scale ;V Fig. 7 is an enlarged-*fragmentary detail view-principally infisectionshowing the handle/inv anfoperativep'osition';

Figari 8i'fisadetailfview"principallyfin. sec-V tionftakenonithe line 8-8 *ofi Fig; 6 Uff- Fig.' 9 is a fragmentary detail lviewi-prin ci allyinfsection.L taken on l the line f 9;9` *of Fig. 6;.1on anenlargedrseale;

Fig: 110 Ais aidetail-viewin section'itake'n: on the line'10'10 of Fig. 7 Y f 45"? Figbllisfa: perspective'view-of the sections-of the mopihead as theyapp'ea-r 'before beingaassembled; someparts" being; brokenfaway?" and @another i part being; vshown in a different position by means of brokenline'sf; 5957 'Fi/ga -1211is' faifragmentary perspective view pressed from a single sheet'of metal;y TheseV sleeve seat l9'that is rectangular inr'crossi` locked at 21 with the front Sectionl `to -coni of'the backlsection of the mop head tofilr lustrate one'of'the spring abutments; and-'f Fig. 13 is a View partly inelevation andi'` partly in section taken on the line 13e-'13 of Fig. 2,'on an enlarged Scale and furthershow# Inga cover for the mop that is wound thereonx-- The mop head comprises front and. bac-k substantially duplicate sections 15-165ree spectively, each of which lis stamped" andi.`

mop'head' sections lf3-#16, when assembled,

form: a horizontal Atubular body f17l havingfiA open ends, an upstanding socket 18,11v atthe^=V longitudinal center of saidl body,l and a long section. Anl upper yoke 20 formed from ai" -flat strip, is .rigidlyv secured tothe'body'v17.4` 'by having-its transverse portion mounte'dfinV vthe seat 19, see Figil9'. Primarily, the lower part ofthe'backsection lois-straight; as-y shown by fulllines in Fig. 11,`to:receiv`e 'the transverse portion of the yoke 2O between the@ sec-tions. 15-'16 and vthereafter folded,` -as'` shownv by Vbroken lines in Fig.' 11 vand inter=" neet said"sec'tions atftheir lower endwfpor-v` tions'. y j

The length ofthe body 17 is such' as toeX- tend the full distance between the prongs of A the yoke 2Ov and therebyy hold saidyoke the mop head. The lower end of'the -mop vhandle22 is telescoped into the sooket18 and rigidly secured thereto byS a -rivet-123, which also rigidly connects thesections 15-16'5 In each-end of thetubular body 17 is ay p'air'of'l diametrically opposite internal-spring bosses' 'f 24, the'purpose of which will presently ap# pear. y

Af wringingv roll 25'of relatively small di-l` ameter is journaled in theprongs of the yoke 20 yand a crank arm 26 is rigidly securedto the right-hand end thereof outward of said? yoke.` The upper end portion'ofthe crank? arm 26 is folded outwardly `upon 'itselfto'ed form a rectangular bearing 27 'having'a pair of axially aligned fandaXially Spaced bore-W like seats 28." A handle 29-is provided for the crank arm 26 and includes astem 30 turnably v mounted in the seatsv 28 with freedom-foren'ds.y il!" wise sliding movement to and from an operative position. On the outer end of the stem is a hand-piece 31 in the form of a disc hav! ing an inwardly rolled capping flange 32 for the bearing 27 when the handle 29 is in an inoperative position, see Fig. 6. The stem 30, when the handle 29 is in an inoperative posi tion, is adapted to be projected into the respectiveend of the tubular body 17.

By reference to Fig. 6, it will be noted that the crank arm 26 is laterally and inwardly offset at 33 so that when said handle 29 is in an inoperative position, its hand-piece 31 is substantially at the outer face of said crank arm and does not project materially outward thereof and thus will not interfere with mopping action when working near a mop board or the like.

On the inner end of the stem 31 is a stop flange 34, arranged to engage the bearing 27 and limit the movement of the handle 29 to an operative position. Adjacent to the stop flange 34is an annular lock-groove 35 and cooperating therewith to yieldingly hold the Y handle 29 in an operative position, is a coiled spring, 36 mounted in a seat within the bearing 27, and under strain to project into said lock-groove when aligned therewith, see Fig. 7 The purpose of thus locking the handle 29 in an operative position is to prevent the same from being pressed inwardly during the rotation of the crank arm 26 and interfere with the movement thereof.

lA clamp 37, cooperating with the wringing roll 25, is provided for .detachably securinga mop thereto. This clamp 37, as shown, comprises a bar 38, which is segmental in cross-section, substantially concentric with the wringing roll 25 and extends the full distance between the prongs of the yoke 2O with a working fit therebetween. Rigidly secured to the clamping bar 38 is a pair of radially projectingr screw-studs 39 which extend loosely ,through diametrically extended bore-like seats in said roll and have applied thereto thumb-nuts 40. These thumb-nuts 40 impinge against recessed seats provided therefor in the opposite side of the wringing roll 25 from the clamping bar 38, see Fig. 5.

-A mop 41 is attached to the wringing roll 25, bymeans of the clamp 37 and, as shown, is woven in the form of a tube and has a loop 42 of canvas or other suitable material sewed to one end thereof, see Figs. 3 and 4. To attach the mop 41 to the wringing roll 25, the clamping bar 38 which has previously been detached from said roll, is inserted endwise into the loop 42 from one end thereof and its screw studs 39 are inserted through holes in the transverse portion of said loop which is between the wringing roll 25 and clamping bar 38. The screw-studs 39 are then inserted through their seats in the wringing roll 25 and the nuts 40 applied vthereto with suiiicient force to draw the loop 38 onto the wringing roll 25 and securely clamp the same between said bar and wringing roll.

Cooperating with the wringing roll 25 is a squeezing abutment in the form of a roll 43 having a diameter considerably larger than that of said wringing roll. rlhis squeezing roll 43 has on its ends trunnions 44 journaled in the prongs of a lower yoke 45 mounted between the prongs of the yoke- 20. Said trunnions 44 project into longitudinally extended slots 46 in the prongs of the yoke 20 and hold the lower yoke 45 for straight line movement in the plane of the yoke 20. There is sufficient clearance between the prongs of the yokes 2O and 45 to permit angular movement of Athe squeezing roll 43 in respect to the wringing roll 25.

By means of a large relatively stiff coiled spring 47, the squeezing roll 43 is yieldingly pressed toward the wringing roll 25 for action on the mop 41 to squeeze the water therefrom as said wringing roll is rotated to wind said mop thereon. This spring 47 is mounted in the socket 18, encircles an upright stem 48 and is compressed between the lower end of the handle 22 and a washer 49 on said stem.

Said stem loosely extends through aligned apertures in the vlower member of the seat 19 i and the transverse portion of the yoke 20, at the longitudinal center thereof. The lower end portion of the stem 48 loosely extends through an aperture in the transverse portion of the yoke 45, see Fig. 6, and has applied thereto an adjustable abutment 50, in the form of a thumb-nut, having screw-threaded engagement with said stem and impinges against the upper surface of said yoke. Obn 4 viously, by adjusting the nut 50, on the stem 48, thetension of the spring 47 may be varied at will.

By reference to Fig. 6, it will be noted that the slots 46 limit the approaching movement of the squeezing roll 43 toward the wringing roll 25. As the mop 41 is wound on the wringing roll 25, which is in Contact withthe outer surface of said mop, the squeezing roll 43'is moved away from the wringing roll 25 under the increasing diameter of said mop against operate the crank arm 26 in a reverse; direction. During mopping action, the handle 29 is moved in an inoperative position as shown I 1n Fig. 6, to lock the wringing roll 25 against rotation. f

It vwill be noted that only one pair of spring bosses 24 are in use and the other pair of spring bosses 24 is simply to give the mop head a symmetrical appearance and permit the members 15-16 to be assembled either at the front or at the back of said mop head.

As the diameter of the cylindrical body 17 is materially larger than that of the stop flange 34, the stem 31 will freely enter said body Without being brought into true axial alignment therewith and thereafter be centered by the engagement of said stop flange with the adjacent pair of spring bosses 24. These spring bosses 24 will yield to permit the stop flange 34 to pass the same and thereafter engage the stem 3l and hold the same against lateral movement thereof which in turn holds the crank arm 26.

The mop 41, when wound, as shown, in Fig. 2, is well adapted for use in polishing floors and the like and in such use a piecer of cheese cloth or other material 51 will be wound t-hereon to form a casing therefor, see Fig. 13. To thus apply the material 51 around the mop 41, one end portion thereof is inserted into the tubular lowerY end of the mop 41 before said mop is completely wound on the wringing roll 25 and thereafter said roll is operated to wind the material 51 on the mop 41 so as to form two or three thicknesses thereof. The outer end portion of the mate- .rial 51 is held from unwinding by the squeezing roll 43.

lrVhat I claim is:

l. A mop head and wringer comprising a head having a pair of prongs, a mop holding roll journaled on said prongs, a crank arm on the roll for rotating the same to wind a mop thereon, a handle on the crank arm comprising a hand-piece equipped stem mounted for endwise sliding movement in the arm and supporting the handle for movement to and from an operative position, said stem having an annular lock groove in its inner end portion and a yielding member on the crank arm arranged to be projected substantially radially into the lock groove to hold the handle in an operative position.

2. A mop head and wringer comprising a head having a pair of prongs, a mop holding roll journaled on the prongs, a crank arm on the roll for rotating the same to Wind a mop thereon, the outer end portion of said arm being folded upon itself and the members laterally spaced to form a bearing having a pair of axially aligned and axially spaced seats, a handle for the arm comprising a hand-piece equipped stem slidably mounted in said seats and supporting a handle for movement to and from an operative position, said stem having an annular groove in its inner end, and a spring mounted in a seat between the bearing members and under strain to project into said groove and hold the handle in an inoperative position.

3. A mop head and Wringer comprising a head having a pair of prongs, a mop holding roll journaled on the prongs, a crank arm on the roll for rotating the same to Wind a mop thereon, the outer end portion of said arm being folded to form a bearing having a pair of axially aligned and axially spaced seats, a handle for the arm comprising a handpiece equipped stem slidably mounted in said seats and supporting a handle for movement to and from an operative position, said handpiece having a cavity in its inner face into which the bearing projects when the handle is in an inoperative position.

4. A mop head and wringer comprising a head having a pair of prongs, a mop holding roll journaled on the prongs, a crank arm on Vthe roll for rotating the same to lwind a mop thereon, the outer end portion of said arm being folded to form a bearing having a pair of axially aligned and axially spaced seats, a handle for the arm comprising a hand-piece equipped stem slidably mounted in said seats and supporting a handle for movement to and from an operative position, a stop member on the stem for limiting the movement of the stem in the bearing during the movement of the handle to its operative position, a pair of diametrically opposite internal spring bosses on the tubular member,"

said bosses being arranged to yield and permit the stop member to pass the same during the movement of the handle to an inoperative position and yieldingly hold the stem.

5. The combination with a relatively thick flat mop and a relatively thin strip that is folded upon itself to form a loop, the longitudinal edge portions of which overlap the mop at one end and are secured thereto, of a mop head having a wringing roll, means for rotating the roll, a clamp inserted through the loop and applied to the roll for clamping the transverse portion of the loop between the roll and loop With the mop entirely free from the roll and clamp.

In testimony whereof I aliix my signature.

OSCAR CARLSON. 

